Minnesota Boiler License Practice Exam

A hot water boiler is classified as a low-pressure boiler based on specific operational temperature and pressure limits. The correct criterion for this classification is that a low-pressure hot water boiler does not exceed 250 degrees Fahrenheit in temperature or 160 PSIG in pressure.

This classification is essential for safety and regulatory compliance, as it determines the design, operation, and maintenance requirements for the boiler. When the temperature or pressure exceeds these thresholds, the boiler may fall under different regulations and require more stringent safety measures due to the increased risk of operating at higher energy levels.

The other options do not accurately reflect the established definitions of low-pressure hot water boilers. Understanding these classifications is vital for professionals working in boiler operation and maintenance, ensuring they adhere to safety standards while operating within the limits of the equipment.